Determine the equations of the lines from the previous exercise.

a) The line intersects the [[$y$]] axis at the point [[$ (0, 3) $]] and has a slope of 1.



Answer: The equation of the line is [[$ y = $]]

b) The line intersects the [[$y$]] axis at the point [[$ (0, 0) $]] and has a slope of [[$ \displaystyle\frac {1} {2} $]].



Answer: The equation of the line is [[$ y = $]]